Beam Failure Recovery Using Candidate Beam Priority
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Solution Overview
Problem
Existing technologies face challenges in efficiently managing beam failures in multiple antenna communication systems, particularly in recovering from beam failures in wireless devices and base stations.
Innovation Solution
The implementation of beam failure recovery operations in wireless devices and base stations, which involve advanced beam management and multiple antenna communication systems, enables the detection and recovery from beam failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam failure recovery operations are implemented in wireless devices and base stations, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple candidate beams and their associated reference signals before beam failure occurs. The base station and wireless device maintain a prepared set of alternative beams that can be immediately activated when beam failure is detected, eliminating the need for lengthy reconfiguration procedures and enabling rapid recovery while managing complexity through advance preparation.
2Reliability
If multiple candidate beams are configured for beam failure recovery, then reliability is improved, but loss of time increases due to monitoring overhead
Solution Approach 1:
The patent applies self-service by enabling the wireless device to autonomously monitor multiple candidate beams using pre-configured reference signals without requiring continuous network control. The device independently evaluates beam quality metrics and can trigger recovery procedures when degradation is detected, reducing network overhead and minimizing the time lost to monitoring while maintaining high reliability through continuous self-assessment of beam conditions.
Data Source
AI summary
A wireless device may detect a beam failure of a serving beam set. In response to detecting the beam failure, the wireless device may select a first candidate beam set from candidate beam sets based on a priority order of the candidate beam sets, wherein each candidate beam set, of the candidate beam sets, comprises reference signals (RSs). The wireless device may select a first candidate RS from candidate RSs associated with the first candidate beam set based on a channel quality of the first candidate RS being greater than a threshold. The wireless device may transmit a preamble associated with the first candidate RS for beam failure recovery.