Comparison-Based COT Operation for LBT Blocking and Channel Sharing
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Solution Overview
Problem
In wireless communications systems, clear channel assessment procedures can lead to issues of LBT blocking due to high-priority reservations, causing interference and inefficiencies in channel occupancy time (COT) management.
Innovation Solution
A method and apparatus for comparison-based COT operation, where a user equipment (UE) determines resource reservations within a COT duration, compares priorities and RSRP values, and decides to initiate, terminate, defer, or share the COT based on these comparisons to avoid LBT blocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If clear channel assessment procedure is performed, then channel access is enabled, but LBT blocking occurs due to high-priority reservations
Solution Approach 1:
The patent applies preliminary action by having the UE check for resource reservations within the COT duration before initiating the COT. The UE compares its priority with reserved resources in advance and makes a decision to initiate, terminate, defer, or share the COT based on this pre-comparison, preventing LBT blocking before it occurs.
Solution Approach 2:
The patent implements feedback through the comparison mechanism where the UE continuously monitors resource reservations and adjusts its COT initiation decision based on the comparison outcome. This feedback loop ensures that high-priority reservations are acknowledged and accommodated, preventing blocking while maintaining channel access efficiency.
2Speed
If COT is initiated without checking resource reservations, then channel access speed is improved, but interference increases
Solution Approach 1:
The patent performs preliminary checking of resource reservations and priority comparisons before COT initiation. This advance preparation allows the UE to make informed decisions about whether to initiate, terminate, defer, or share the COT, preventing interference while maintaining efficient channel access speed.
Solution Approach 2:
The patent changes the decision parameters for COT initiation by incorporating multiple factors including priority levels, RSRP values, and resource reservation status. This multi-parameter evaluation enables the UE to balance access speed with interference prevention by adjusting its behavior based on the current channel state and reservation conditions.
3Productivity
If priority-based comparison is performed, then resource sharing efficiency is improved, but decision complexity increases
Solution Approach 1:
The patent manages decision complexity by establishing clear parameter thresholds and comparison criteria for priority, RSRP values, and resource reservations. By structuring the decision logic around these defined parameters, the system achieves efficient resource sharing while keeping the decision-making process manageable through standardized comparison rules.
Solution Approach 2:
The patent applies local quality by treating different comparison scenarios (initiate, terminate, defer, share) as distinct decision paths with specific criteria. Each COT decision type has its own tailored comparison logic, allowing efficient resource sharing while managing complexity through localized decision rules rather than a single complex algorithm.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for comparison based channel occupancy time (“COT”) operation. One method includes determining, prior to initiating a COT, whether there is at least one resource reservation within a COT duration. The method includes in response to determining that there is at least one resource reservation within the COT duration, comparing a first priority, a first at least one reference signal received value (“RSRP”) value, a first overbooking factor, or some combination thereof of the at least one resource reservation with a second priority, a second at least one RSRP value, a packet data block (“PDB”), or some combination thereof of the UE performing a listen-before-talk (“LBT”) to initiate the COT. The method includes determining to initiate the COT, terminate the COT, defer the COT, or share the COT based on an outcome of the comparing.