Shared COT Subband Access Using CAP-Based Logical Channel Restriction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing shared channel occupancy time (COT) due to the lack of effective methods for determining and enforcing channel access priorities, leading to inefficiencies in channel usage and potential interference.
Innovation Solution
A wireless transmit/receive unit (WTRU) is configured to determine channel access priority (CAP) associated with a COT, apply logical channel restrictions based on CAP, and send transmissions during the COT using subbands, ensuring that only channels with equal or higher priority are included, guided by indications from the gNB and DCI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If channel access priority is not enforced in shared COT, then all logical channels can be transmitted, but channel utilization efficiency decreases and interference increases
Solution Approach 1:
The patent applies local quality by differentiating treatment of different logical channels based on their priority levels. Within the shared COT, high-priority logical channels are allowed to transmit while low-priority channels are restricted, creating locally optimized access rights that improve overall channel utilization efficiency and reduce interference from lower-priority transmissions.
Solution Approach 2:
The patent changes the parameter of channel access rights by introducing CAP (channel access priority) as a controlling parameter. The WTRU determines which logical channels can transmit during shared COT based on their CAP values relative to the COT's priority level, dynamically adjusting transmission permissions to optimize efficiency and minimize interference.
2Object-generated harmful factors
If logical channel restriction is applied based on CAP, then interference is reduced, but channel access complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-establishing the CAP values and priority levels for different logical channels before the shared COT begins. The WTRU receives configuration information about which logical channels have higher CAP values, allowing it to automatically enforce restrictions during transmission without real-time complex decision-making, thus reducing operational complexity while maintaining interference reduction benefits.
Solution Approach 2:
The patent implements feedback mechanisms where the WTRU receives indication information from the network about the CAP values associated with different logical channels. This feedback allows the WTRU to automatically adjust its transmission behavior during shared COT, enforcing priority-based restrictions without requiring complex local processing or decision-making algorithms.
3Productivity
If all logical channels are allowed transmission during COT, then device complexity is reduced, but channel utilization efficiency decreases
Solution Approach 1:
The patent changes the parameter of channel access rights by introducing CAP (channel access priority) as a controlling parameter. The WTRU determines which logical channels can transmit during shared COT based on their CAP values relative to the COT's priority level, dynamically adjusting transmission permissions to optimize efficiency and minimize interference.
Data Source
AI summary
A wireless transmit/receive unit (WTRU) may monitor LBT subbands to determine when a COT is activated. A WTRU may vary monitoring based on whether the WTRU received a full or partial COT structure. A WTRU may interpret a scheduling grant based on the set of acquired LBT subbands. A WTRU may determine a channel access priority (CAP) associated with a COT. A WTRU may indicate a CAP used to acquire a COT. A WTRU may receive an indication of a CAP used by a network to start a COT. A WTRU may determine a logical channel restriction based on a CAP associated with the COT. A WTRU may determine whether a logical channel may be included in a transmission during a COT based on a logical channel restriction. A transmission may be during a COT via a subband(s).