Carrier Switching Rules for Uplink Control Information Latency
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Solution Overview
Problem
Current wireless communication systems face limitations in carrier selection for uplink control information (UCI) transmissions, particularly in reducing latency and addressing different types of UCI and priority levels, which can lead to violations of latency requirements and inefficient UCI timing.
Innovation Solution
Implementing carrier switching restriction rules that allow user equipment (UE) to select carriers based on the type of UCI, priority level, and timing relative to downlink transmissions, enabling more intelligent and efficient carrier selection within a cell group.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If carrier selection is performed based on simple rules, then device complexity is reduced, but latency requirements cannot be satisfied and UCI timing efficiency deteriorates
Solution Approach 1:
The patent changes the parameters of carrier selection by introducing multiple selection rules that consider different factors such as UCI type, priority level, and timing relationships with downlink transmissions. This allows the system to adapt carrier selection to specific transmission requirements, reducing latency for time-sensitive UCI while maintaining manageable complexity through structured decision criteria.
Solution Approach 2:
The patent implements dynamic carrier selection where the selected carrier changes based on real-time conditions including UCI type, priority level, and timing relationships. The system dynamically adjusts carrier selection decisions to satisfy latency requirements for different UCI transmissions, making the system adaptive rather than static.
2Productivity
If carrier selection is performed based on multiple factors (UCI type, priority, timing), then UCI handling efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments the carrier selection process into multiple independent rules, each addressing a specific aspect of UCI transmission (UCI type-based selection, priority level-based selection, timing-based selection). This segmentation allows the system to handle different UCI scenarios with appropriate rules while maintaining clear, manageable complexity through modular rule structures.
Solution Approach 2:
The patent applies different selection criteria (local qualities) to different types of UCI transmissions. High-priority UCI may use one selection rule, while low-priority UCI uses another, allowing optimized handling for each UCI category without requiring a single complex universal rule.
3Device complexity
If fixed carrier selection is used, then device complexity is reduced, but adaptability to different UCI types and priority levels deteriorates
Solution Approach 1:
The patent creates a universal carrier selection framework that handles multiple UCI types and priority levels through a set of standardized rules. The same rule structure adapts to different scenarios by considering UCI type, priority level, and timing relationships, providing versatility without requiring separate mechanisms for each UCI category.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify uplink control information to be transmitted using a first carrier of a carrier group associated with a cell group. The UE may select a second carrier of the carrier group to transmit the uplink control information based at least in part on a type of uplink control information to be transmitted, a priority level associated with the uplink control information, a timing for transmission of the uplink control information with respect to an associated downlink transmission, or a combination thereof. The UE may transmit the uplink control information to one or more cells in the cell group using the second carrier.