Beam Recovery for Partial Control Channel Failure in 5G Networks
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Solution Overview
Problem
Next-generation wireless communication networks, such as 5G, face challenges in maintaining beam stability due to partial control channel failures caused by transient obstructions and interference, leading to disrupted data transfer and potential errors in beam pair links.
Innovation Solution
User equipment devices and network nodes implement a method to detect failing beam pair links by monitoring signal strength and noise ratios, switching uplink and downlink control resource slots to alternative beam pair links with stronger signal strengths, and notifying the network to reconfigure PUCCH resources, ensuring continuous communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beam pair links are used for next-generation wireless communication, then data transfer capacity is improved, but beam stability deteriorates due to transient obstructions and interference
Solution Approach 1:
The system proactively monitors beam quality metrics (RSRP, SINR) and detects beam failures before they completely disrupt communication. By implementing beam failure detection and recovery procedures in advance, the system can switch to alternative beams or reconfigure resources preemptively, maintaining communication continuity and resolving the stability issue while preserving high data transfer capacity
Solution Approach 2:
The patent implements redundancy by configuring multiple beam pair links and alternative resource slots. When a beam failure is detected, the system has pre-prepared backup beams and resources ready to take over, cushioning against the impact of transient obstructions and interference. This ensures beam stability is maintained through failover mechanisms while the primary beams continue to provide high-capacity data transfer
2Reliability
If control resource sets are monitored for beam failure detection, then beam reliability is improved, but system complexity increases
Solution Approach 1:
The user equipment autonomously monitors beam quality metrics, detects beam failures, and initiates recovery procedures without requiring complex centralized control. The UE self-manages beam failure detection by evaluating RSRP and SINR thresholds, and self-triggers beam switching or resource reconfiguration, simplifying the overall system architecture while maintaining high beam reliability through distributed intelligence
3Reliability
If uplink control resource slots are switched to alternative beam pair links, then communication continuity is improved, but resource reconfiguration overhead increases
Solution Approach 1:
Alternative beam pair links and control resource sets are pre-configured and prepared in advance as backup resources. When a beam failure is detected, the system can immediately switch to these pre-prepared resources without requiring time-consuming reconfiguration procedures. This preliminary preparation maintains communication continuity while minimizing reconfiguration overhead by eliminating the need for real-time resource setup
Data Source
AI summary
Various embodiments disclosed herein provide for a beam recovery when there has been a partial control channel failure. Transient obstructions, and other interference effects can cause the failure of a beam pair link which can comprise a transmit beam and a receive beam associated with respective antennas on a transmitter and receiver. A group of control channels (downlink control channels) (configured as a control resource set “CORESET”) on a group of beam pair links can be associated with a group of uplink control resources (Physical Uplink Control Channel resources). When a subset of the CORESET group fails, the user equipment (UE) device can find another PUCCH that is associated with a working CORESET to send an indication to the network about the failure. When the network receives the indication, the network can switch the failed CORESET to a new beam pair link.