Wireless Communication Cross-Slot Scheduling for Power-Saving Reception
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Solution Overview
Problem
Wireless devices face challenges in optimizing power consumption during data packet reception, particularly when using same-slot scheduling, which limits power-saving opportunities.
Innovation Solution
Implementing cross-slot scheduling for wireless devices to allow power-saving modes by reducing symbol monitoring on certain cells while maintaining non-power saving modes on others, based on cross-slot scheduling indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If same-slot scheduling is used for data packet reception, then data reception efficiency is improved, but power consumption increases due to limited power-saving opportunities
Solution Approach 1:
The patent implements dynamic scheduling timing where the wireless device can switch between same-slot scheduling (for high efficiency) and cross-slot scheduling (for power saving) based on traffic conditions and power state, allowing the system to adaptively adjust the timing relationship between DCI and data transmission
Solution Approach 2:
The patent introduces periodic monitoring opportunities where the wireless device monitors for DCI at specific intervals rather than continuously, enabling power-saving modes while maintaining data reception capability through scheduled monitoring periods
2Use of energy by moving object
If cross-slot scheduling is applied to all cells, then power savings are maximized, but data reception efficiency deteriorates on cells requiring low latency
Solution Approach 1:
The patent applies different scheduling configurations to different cells based on their specific requirements - power-saving mode with cross-slot scheduling is applied to cells where latency is less critical, while low-latency cells maintain same-slot scheduling, allowing localized optimization without compromising overall system performance
Solution Approach 2:
The patent segments the cell group into different subsets - some cells configured for power-saving mode with cross-slot scheduling and others for low-latency mode with same-slot scheduling, enabling independent optimization of each segment according to its specific requirements
3Use of energy by moving object
If power-saving mode is activated to reduce symbol monitoring, then power consumption decreases, but monitoring capability is reduced
Solution Approach 1:
The patent implements periodic monitoring where the wireless device monitors for DCI at predetermined intervals rather than continuously, reducing power consumption during non-monitoring periods while maintaining the ability to detect scheduling information at scheduled times
Solution Approach 2:
The patent uses pre-configured monitoring patterns and cross-slot scheduling indications that are established in advance, allowing the wireless device to know when and where to monitor for DCI, thereby reducing the need for continuous monitoring while ensuring data reception capability is maintained
Data Source
AI summary
Base stations and wireless devices may use cross-slot scheduling for each of a plurality of cells. Base stations and wireless devices may communicate regarding the cross-slot scheduling, including for example, one or more indications associated with cross-slot scheduling for one or more cells. A wireless device may determine cross-slot scheduling for one or more transmissions associated with the one or more cells. The wireless device may save power by switching to a power saving mode for at least one cell during one or more slots, based on the cross-slot scheduling.