Cross-Slot Scheduling Offset Interpretation for Wireless Power Saving
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing power consumption and scheduling for user equipment (UE) operating with different numerologies, leading to ambiguity in interpreting minimum scheduling offsets.
Innovation Solution
The implementation of a method that uses a minimum scheduling offset to enhance cross-slot scheduling, allowing the UE to determine the first slot on a shared channel that can be scheduled by a grant transmitted on a downlink control channel, and to operate in a low power state or communicate data based on the scheduling grant.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If cross-slot scheduling is implemented with different numerologies, then power saving is improved by extending low power state duration, but ambiguity in interpreting minimum scheduling offsets increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the minimum scheduling offset parameter based on the numerology type. When the numerology indicates cross-slot scheduling, the minimum scheduling offset is set to a value greater than zero, thereby resolving the ambiguity while enabling extended power saving modes. This parameter adaptation allows the system to maintain clear scheduling definitions across different numerologies.
2Duration of action of moving object
If minimum scheduling offset is increased for cross-slot scheduling, then power saving mode duration is extended, but scheduling flexibility is reduced
Solution Approach 1:
The patent implements dynamics by making the minimum scheduling offset value adaptive rather than fixed. The offset is dynamically adjusted based on the numerology configuration and slot timing requirements. This allows the system to extend power saving duration when appropriate while maintaining scheduling flexibility when rapid resource allocation is needed, resolving the contradiction between duration extension and flexibility preservation.
3Adaptability or versatility
If cross numerology scheduling is supported, then system versatility is improved, but processing complexity increases
Solution Approach 1:
The patent applies local quality by implementing numerology-specific processing rules rather than a universal complex algorithm. The minimum scheduling offset interpretation is tailored to each numerology type, with specific rules for cross-slot versus same-slot scheduling. This localized approach enables cross numerology support while keeping processing complexity manageable by avoiding a one-size-fits-all complex solution.
Data Source
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AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a scheduling offset threshold corresponding to a cross-slot grant. The UE may monitor a control channel in a first slot for the cross-slot grant, the control channel having a first numerology that is different than a second numerology of a shared channel and determine a beginning slot defined in the second numerology based on interpreting the scheduling offset threshold as being defined in the first numerology or the second numerology. The UE may then enter a low power state, or communicating a data transmission, during the beginning slot based on whether the cross-slot grant is detected.