Beam Failure Recovery Request Transmission Prioritization
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Solution Overview
Problem
In high-frequency band communication systems, beam failure recovery requests cannot be transmitted properly when they overlap with other uplink channels or signals due to limitations in uplink transmit power and antenna structure, preventing simultaneous transmission.
Innovation Solution
The method involves prioritizing the transmission of beam failure recovery requests by transmitting them within a designated time period that overlaps with other uplink channel or signal transmission periods, ensuring the beam failure recovery request is sent even when other signals are not carrying a beam failure recovery request, thus ensuring the priority of beam failure recovery requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE transmits beam failure recovery request and other uplink channel or signal simultaneously, then the communication efficiency is improved, but the transmission reliability deteriorates due to uplink transmit power and antenna structure limitations
Solution Approach 1:
The UE performs preliminary detection to determine whether the uplink channel or signal carries beam failure recovery request information before transmission. This advance check allows the UE to proactively avoid power allocation conflicts by identifying potential overlaps beforehand, ensuring reliable transmission of beam failure recovery requests without compromising communication efficiency
2Reliability
If the UE prioritizes beam failure recovery request transmission by transmitting it within overlapping time periods, then the transmission reliability of beam failure recovery requests is improved, but the transmission timing of other uplink channels or signals is delayed
Solution Approach 1:
The UE applies different transmission strategies to different types of signals based on their priority and content. Beam failure recovery requests receive prioritized power allocation and transmission timing, while other uplink channels or signals are adjusted accordingly. This localized differentiation ensures critical recovery requests are transmitted reliably without unnecessarily delaying all uplink transmissions
3Productivity
If the UE allocates uplink transmit power to multiple channels simultaneously, then the communication throughput is improved, but the power management complexity increases due to power allocation conflicts
Solution Approach 1:
The UE introduces an intermediary detection mechanism that identifies whether uplink channels carry beam failure recovery request information. This intermediary check acts as a mediator between power allocation demands, automatically resolving conflicts by preventing simultaneous power allocation to overlapping transmissions, thereby simplifying power management while maintaining throughput
Data Source
AI summary
A method of transmitting a beam failure recovery request and UE are provided. The method is applied to UE and includes: transmitting, in a case that it is determined that a first time period for transmitting a beam failure recovery request and at least one second time period for transmitting an uplink channel or signal overlap and the uplink channel or signal supposed to be transmitted within the at least one second time period does not carry the beam failure recovery request, the beam failure recovery request to a network side device within the first time period.