Terminal Scheduling Request Configuration for Beam Failure Recovery
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Solution Overview
Problem
In future radio communication systems, the extended configuration of scheduling requests (SRs) for beam failure detection and recovery poses challenges in effectively managing SR transmission, leading to potential reductions in communication throughput and quality due to inadequate control over SR configuration and application for multiple purposes.
Innovation Solution
A terminal equipped with a receiving section for SR configuration information and a control section that manages SR application across multiple purposes, utilizing multiple uplink control channel resources or spatial relations to ensure appropriate SR transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the SR configuration is extended for beam failure detection in future radio communication systems, then the beam failure recovery capability is improved, but the device complexity and difficulty of managing SR transmission for multiple purposes increases
Solution Approach 1:
The patent segments the SR configuration management by introducing separate indication mechanisms for different SR purposes (beam failure detection vs. other purposes). The terminal device separately indicates SR transmission for beam failure detection and SR transmission for other purposes, dividing the complex unified SR management into distinct controllable segments.
Solution Approach 2:
The patent implements dynamic SR configuration where the terminal can flexibly switch between different SR transmission modes based on the detected beam failure state. When beam failure is detected, the terminal dynamically applies the first SR configuration; when beam failure is not detected, the terminal dynamically applies the second SR configuration, making the system adaptable to changing conditions.
2Reliability
If the SR configuration is extended for beam failure detection, then the beam failure recovery capability is improved, but the ease of operation in controlling SR transmission for multiple purposes deteriorates
Solution Approach 1:
The patent enables the terminal device to autonomously manage SR transmission by automatically selecting between different SR configurations based on beam failure detection results. The terminal self-determines when to use the first SR configuration for beam failure detection versus the second SR configuration for other purposes, eliminating the need for complex manual configuration management.
3Adaptability or versatility
If SR transmission is not appropriately performed for each purpose in extended SR configuration, then the adaptability of SR to multiple purposes is reduced, but the device complexity is also reduced
Solution Approach 1:
The patent makes the SR mechanism universal by configuring it to serve multiple purposes: beam failure detection and other communication purposes. Two different SR configurations are established, where the first SR configuration is applied when beam failure is detected and the second SR configuration is applied when beam failure is not detected, allowing the same SR infrastructure to fulfill multiple functions.
Data Source
AI summary
To appropriately transmit a scheduling request (SR) even in a case where a configuration of the SR is extended. A terminal according to an aspect of the present disclosure includes: a receiving section that receives information regarding a configuration of a scheduling request (SR) for beam failure detection; and a control section that makes control to apply the SR to a plurality of purposes in a case where a plurality of SRs are configured, in a case where a plurality of uplink control channel resources are configured for the SR, or in a case where a plurality of spatial relations correspond to an uplink control channel resource configured in the SR.