UE PDCCH Capability Reporting for Flexible Multi-Slot Monitoring
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing user equipment (UE) monitoring capabilities for multiple slot physical downlink control channel (PDCCH) monitoring, particularly in 5G networks, leading to increased UE complexity and reduced scheduling flexibility.
Innovation Solution
Implementing a PDCCH monitoring capability that indicates the time between consecutive monitoring windows, the number of slots, and the number of symbols for PDCCH monitoring, allowing for a span-based configuration that enhances scheduling flexibility and reduces UE complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional PDCCH monitoring methods are used in 5G networks, then comprehensive monitoring coverage is achieved, but UE complexity increases and scheduling flexibility is reduced
Solution Approach 1:
The PDCCH monitoring capability is segmented into multiple independent parameters: time between monitoring windows, number of slots per window, and number of symbols per slot. This segmentation allows the UE to report capabilities for each parameter separately, enabling the network to configure monitoring patterns that match UE capabilities without requiring the UE to handle all parameters simultaneously, thus reducing complexity while maintaining flexibility
Solution Approach 2:
The monitoring configuration is made dynamic through the span-based approach, where the UE can adapt its monitoring behavior based on reported capabilities. The network can dynamically adjust the number of slots and symbols within monitoring windows based on UE feedback, allowing the system to optimize between coverage and complexity on a per-UE basis rather than using fixed rigid configurations
2Reliability
If multiple slot PDCCH monitoring is implemented, then monitoring coverage is improved, but UE processing complexity increases
Solution Approach 1:
The patent introduces specific parameters to control monitoring behavior: time between monitoring windows, number of slots per window, and number of symbols per slot. By changing and optimizing these parameters based on UE capabilities, the system achieves improved monitoring coverage while keeping processing complexity manageable through capability-based configuration
3Adaptability or versatility
If comprehensive PDCCH monitoring configuration is provided, then scheduling flexibility is enhanced, but UE implementation complexity increases
Solution Approach 1:
The UE performs preliminary capability reporting before actual PDCCH monitoring configuration. By reporting its capabilities in advance regarding time between windows, slots per window, and symbols per slot, the UE enables the network to pre-determine an appropriate configuration that matches its implementation capabilities, avoiding the need to handle overly complex configurations that would be difficult to implement
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit an indication of a physical downlink control channel (PDCCH) monitoring capability that indicates an amount of time between two consecutive PDCCH monitoring windows, a number of slots to be included in a PDCCH monitoring window, and a number of consecutive symbols in a slot to be associated with PDCCH monitoring. The UE may receive a PDCCH monitoring configuration that is based at least in part on the PDCCH monitoring capability. Numerous other aspects are described.