UE Multi-Slot Scheduling Adaptation for Processing Delays
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Solution Overview
Problem
Wireless communication systems face challenges in adapting processing timelines at user equipment (UE) for higher frequency bands, where shorter slot lengths due to larger subcarrier spacing lead to processing delays and inefficiencies, particularly in handling physical downlink control channel processing and beam switching.
Innovation Solution
The techniques enable UE to signal its capability for both single-slot and multi-slot scheduling modes, allowing the base station to configure and communicate using the appropriate processing mode, which includes transmitting a capability report indicating support for multi-transmission time interval scheduling, receiving configurations for single-slot and multi-slot processing, and applying the indicated processing mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If larger subcarrier spacing is used to reduce phase noise impact in higher frequency bands, then slot length decreases, but processing delays at UE do not scale proportionally, causing processing inefficiencies
Solution Approach 1:
The patent implements dynamic switching between single-slot processing mode and multi-slot processing mode based on UE capability reporting. The base station receives capability indicators from the UE and dynamically configures the appropriate processing mode, allowing the system to adapt processing timelines to match the reduced slot lengths in higher frequency bands while maintaining efficient resource utilization.
Solution Approach 2:
The patent changes the processing mode parameter (single-slot vs. multi-slot) based on UE capability and network configuration. By introducing a capability reporting mechanism, the system can adjust processing parameters to match the physical layer characteristics of higher frequency bands, resolving the mismatch between shortened slot lengths and fixed processing delays.
2Productivity
If single-slot processing mode is used to match shorter slot lengths, then processing efficiency improves, but flexibility in handling different communication scenarios is reduced
Solution Approach 1:
The patent makes the UE universally capable of operating in both single-slot processing mode and multi-slot processing mode. The UE reports its capability to support both modes, and the base station can dynamically select the appropriate mode based on traffic conditions, channel characteristics, and UE capability, thereby achieving both processing efficiency and scheduling flexibility across different scenarios.
Solution Approach 2:
The system dynamically switches between single-slot and multi-slot processing modes based on real-time conditions. The capability reporting mechanism enables flexible adaptation, allowing the network to optimize for processing efficiency when using single-slot mode while maintaining the option to use multi-slot mode for scenarios requiring greater scheduling flexibility, such as when channel conditions warrant more robust transmission.
3Adaptability or versatility
If multi-slot scheduling is implemented to provide scheduling flexibility, then adaptability improves, but processing complexity and overhead increase
Solution Approach 1:
The patent segments the processing capability into distinct modes (single-slot and multi-slot) that the UE can report and the network can selectively activate. This segmentation allows the system to use the simpler single-slot processing mode when flexibility is not required, thereby reducing processing complexity and overhead, while still maintaining the capability to switch to multi-slot mode when scheduling flexibility becomes necessary.
4Reliability
If conventional processing timelines are maintained for compatibility, then system compatibility is preserved, but performance in higher frequency bands deteriorates
Solution Approach 1:
The patent introduces dynamic mode selection that allows the system to maintain compatibility through capability reporting while optimizing performance by selecting the appropriate processing mode. The UE reports its capability to support both single-slot and multi-slot modes, enabling the network to configure optimal processing timelines for higher frequency bands while preserving backward compatibility with conventional systems that use traditional processing timelines.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to transmit, to a base station, a capability report indicating a capability of the UE to support multi-transmission time interval scheduling. The UE may then receive, from the base station based on the capability report, a first configuration of a first processing mode for the UE that is associated with communications scheduled for a single transmission time interval, and a second configuration of a second processing mode for the UE that is associated with communications scheduled for a scheduling interval spanning a plurality of transmission time intervals. The UE may receive, from the base station, an indication to apply the first processing mode or the second processing mode, and may communicate with the base station based on the indication.