TCI-State Beam Selection for Multi-TRP Failure Recovery
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing beam failures and recovering from them, particularly in multi-transmission reception point operations, leading to inefficiencies and reduced transmission/reception success rates.
Innovation Solution
A wireless device is configured to receive messages indicating candidate beams for update, with the applicability of beam updates dependent on the computing device, allowing for improved communication efficiency and increased likelihood of successful transmission/reception by using appropriate beams for specific communication scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If beam updates are applied universally across all computing devices, then beam failure recovery speed is improved, but transmission accuracy deteriorates due to inappropriate beam usage for specific communication scenarios
Solution Approach 1:
The patent applies local quality by differentiating beam update applicability based on the specific computing device and communication scenario. The network device determines whether a candidate beam should be applied to the wireless device based on the specific TRP configuration (anchor TRP vs. non-anchor TRP), ensuring that beam updates are locally optimized for each communication context rather than universally applied, thus maintaining transmission accuracy while enabling timely recovery.
2Reliability
If beam updates are restricted based on computing device type, then transmission accuracy is improved, but beam failure recovery speed deteriorates due to additional determination steps
Solution Approach 1:
The patent applies preliminary action by pre-configuring the wireless device with multiple Transmission Configuration Indicator (TCI) states before beam failure occurs. The network device provides TCI state configurations in advance, including pathloss offset configurations, so that when beam failure is detected, the wireless device can immediately determine applicability based on pre-established criteria without requiring additional real-time determination steps, thus maintaining transmission accuracy while enabling fast recovery.
3Productivity
If pathloss offset configuration is always applied, then communication efficiency with non-anchor TRP is improved, but beam update applicability determination becomes complex
Solution Approach 1:
The patent applies dynamics by making the pathloss offset configuration dynamic and conditional rather than static and universal. The network device configures pathloss offset values in TCI states based on the specific communication scenario and TRP type. The wireless device dynamically determines whether to apply the pathloss offset based on the candidate beam's association with anchor or non-anchor TRP, simplifying the determination logic to a clear conditional rule while maintaining communication efficiency for non-anchor TRP scenarios.
Data Source
AI summary
A wireless device may be configured to communicate with multiple computing devices, such as transmission/reception points. A message from a first computing device may be configured to cause the wireless device to determine whether to use a beam update, such as after a beam failure detection. The determination may be based on information in the message, such as a transmission configuration indicator state and/or a pathloss offset.