Uplink Beam Failure Recovery with Cell- and TRP-Specific Detection

The patent segments beam failure detection into two independent procedures: cell-specific BFD (monitored by all terminals) and TRP-specific BFD (monitored by capable terminals). This segmentation allows the system to support both procedures without requiring all terminals to implement complex logic, as terminals can be configured to support only the appropriate procedure based on their capabilities and network configuration.

The patent applies local quality by making TRP-specific BFD configuration optional and terminal-specific. Only terminals with advanced capabilities receive and process TRP-specific BFD configurations, while other terminals use standard cell-specific procedures. This ensures that complexity is localized to only those terminals that require and can handle the enhanced functionality.

The patent implements dynamic resource allocation where PUCCH resources for BFR are dynamically assigned based on the detected beam failure type. Terminals first attempt cell-specific BFR using configured PUCCH resources, and only if that fails do they proceed to TRP-specific BFR procedures. This dynamic approach ensures that simpler, more resource-efficient procedures are used whenever possible, reserving complex procedures for when they are actually needed.

The patent ensures continuous useful action by establishing a hierarchical BFR process where cell-specific procedures serve as the primary, resource-efficient first line of defense. Only when cell-specific procedures fail does the system transition to TRP-specific procedures. This continuous hierarchical approach maximizes resource utilization by avoiding unnecessary execution of complex procedures while ensuring comprehensive coverage.