Bandwidth Parts for Beam Failure Reporting in Multi-TRP Scenarios
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing bandwidth and resource allocation across multiple carriers and cells, leading to suboptimal performance and increased complexity.
Innovation Solution
The implementation of bandwidth parts (BWPs) and dynamic configuration of core sets (CORESETs) allows for flexible and adaptive bandwidth management, enabling UEs to switch between different BWP configurations based on traffic conditions and network requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple carriers and cells are used for wireless communication, then network capacity and coverage are improved, but bandwidth management complexity and resource allocation difficulty increase
Solution Approach 1:
The patent segments the overall bandwidth across multiple carriers into distinct bandwidth parts (BWPs), where each BWP represents a controllable portion of the total bandwidth. This segmentation allows the network to manage bandwidth resources in smaller, more manageable units rather than treating the entire multi-carrier bandwidth as a single complex resource, thereby reducing bandwidth management complexity while maintaining high network capacity
Solution Approach 2:
The patent implements dynamic BWP configuration and switching mechanisms that allow bandwidth allocations to be adjusted in real-time based on traffic conditions and service requirements. This dynamic approach enables the system to adapt bandwidth distribution across multiple carriers flexibly, optimizing resource allocation without requiring complex static configurations, thus improving productivity while controlling complexity
2Productivity
If bandwidth parts (BWPs) are implemented for flexible bandwidth management, then spectral efficiency is improved, but system configuration complexity increases
Solution Approach 1:
The patent utilizes parameter changes by defining BWPs through configurable parameters such as bandwidth size, frequency location, and subcarrier spacing. These parameters can be dynamically adjusted to optimize spectral efficiency for different service types and traffic conditions. The standardized parameter-based configuration approach allows flexible spectral efficiency improvement while maintaining manageable system complexity through consistent parameter management
3Loss of time
If dynamic BWP switching is enabled based on traffic conditions, then latency is reduced, but control signaling overhead increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple BWPs with different characteristics (e.g., wide bandwidth for high data rate, narrow bandwidth for power efficiency) before traffic arrives. When traffic conditions change, the system can immediately switch to the pre-configured appropriate BWP without requiring time-consuming reconfiguration, thereby reducing latency. The control signaling overhead is minimized because the switching relies on pre-established configurations rather than creating new configurations in real-time
Data Source
AI summary
A wireless device receives one or more radio resource control (RRC) messages comprising configuration parameters indicating a first set of reference signals (RSs) for a first beam failure detection of a primary cell, a second set of RSs for a second beam failure detection of the primary cell, and a scheduling request (SR) configuration for reporting a beam failure detected on the second set of RSs. The first set of RSs is associated with a first group index and the second set of RSs is associated with a second group index. Based on the second beam failure detection on the second set of RSs, the wireless device transmits, using the SR configuration, a physical uplink control channel (PUCCH) transmission with a recovery request associated with the second set of RSs.