Multi-Cell Beam Management With Separate Recovery Resources
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Solution Overview
Problem
Beam failure recovery procedures in wireless communications consume significant resources and lead to system inefficiencies due to the consumption of frequency, time, and energy resources.
Innovation Solution
Implementing beam failure recovery methods that utilize different uplink and downlink resources for indicating and acknowledging candidate beam selection status, and communicating configuration parameters to improve resource allocation, power consumption, and latency, while enhancing beam management flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional beam failure recovery procedures are used, then beam failure recovery can be achieved, but frequency, time, and energy resources are consumed leading to system inefficiencies
Solution Approach 1:
The beam failure recovery procedure is segmented into distinct phases: candidate beam indication phase using first uplink resources, and candidate beam acknowledgment phase using second uplink resources. This segmentation allows parallel resource allocation and reduces the overall resource consumption by avoiding sequential resource usage patterns.
Solution Approach 2:
The patent introduces a new dimension to resource allocation by establishing separate resource sets for different purposes within the same time-frequency space. First uplink resources are dedicated for indicating candidate beams, while second uplink resources are dedicated for acknowledging selections, creating a multi-dimensional resource management approach that improves system efficiency.
2Reliability
If beam failure recovery procedures consume resources, then recovery can be performed, but energy resources are depleted
Solution Approach 1:
The patent establishes a continuous feedback loop where the wireless device continuously monitors beam quality, indicates candidate beams using first uplink resources, and receives acknowledgments using second uplink resources. This continuous action ensures that energy is consumed only when necessary for beam failure recovery operations, optimizing the energy-resource tradeoff.
Solution Approach 2:
The acknowledgment mechanism using second uplink resources provides feedback to the wireless device about the selected candidate beam. This feedback loop allows the system to optimize energy consumption by confirming successful beam recovery operations and avoiding redundant resource allocation attempts.
3Reliability
If beam failure recovery uses dedicated resources, then recovery reliability is improved, but time resources are consumed causing latency
Solution Approach 1:
The patent dynamically allocates first uplink resources for candidate beam indication and second uplink resources for acknowledgment based on the actual beam failure recovery needs. This dynamic resource allocation allows the system to adapt to different recovery scenarios and minimize time consumption by only allocating resources when beam failure occurs.
Solution Approach 2:
The system pre-configures separate resource sets for beam failure recovery operations, allowing the wireless device to quickly indicate and acknowledge candidate beams without requiring real-time resource negotiation. This preliminary configuration reduces the time needed for beam failure recovery operations.
Data Source
AI summary
Wireless communications and beam failure recovery are described. A wireless device may send one or more messages associated with a beam failure recovery for a plurality of cells. The one or more message may comprise a configuration parameter of an uplink bandwidth part (BWP) associated with beam failure recovery of a first cell. The one or more message may comprise a configuration parameter of a downlink BWP associated with beam failure recovery of a second cell.