Sidelink Collision Indication Prioritization for Limited Transmission Capacity
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Solution Overview
Problem
In wireless communication systems, third-party User Equipments (UEs) face challenges in efficiently coordinating sidelink transmissions, particularly in identifying and prioritizing conflicts between multiple UEs sharing the same channel resources, due to limited capacity in transmission occasions, which can lead to dropped feedback messages or conflict indications.
Innovation Solution
Implementing prioritization schemes for selecting which feedback and conflict indications to include in transmission occasions, where conflict indications are prioritized based on conflict types, and regular feedback messages are prioritized over certain conflict indications, allowing for efficient communication of conflict information even with limited capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the third-party UE includes all conflict indications and feedback messages in the transmission occasion, then the collision detection capability is improved, but the transmission capacity is exceeded and some messages are dropped
Solution Approach 1:
The patent segments the transmission occasion into multiple priority levels or categories for different types of feedback messages and conflict indications. By dividing the transmission content into segments with different priorities, the system can selectively include high-priority messages while excluding lower-priority ones when capacity is limited, thus maintaining collision detection capability without exceeding transmission capacity.
Solution Approach 2:
The patent applies local quality by assigning different priority levels or qualities to different types of feedback messages and conflict indications. High-priority conflict indications (e.g., those indicating actual collisions) are given higher quality weights, ensuring they are transmitted first, while lower-priority messages are dropped when capacity is exceeded. This ensures the most critical collision detection information is preserved.
2Quantity of substance
If the third-party UE prioritizes certain feedback messages over conflict indications, then the transmission capacity constraint is satisfied, but the collision detection effectiveness may be reduced
Solution Approach 1:
The patent changes the parameter of message priority by dynamically adjusting the priority levels of feedback messages and conflict indications based on their importance for collision detection. Conflict indications that suggest actual or potential collisions are assigned higher priority parameters, ensuring they are transmitted even when capacity is limited, thus maintaining collision detection effectiveness while satisfying transmission capacity constraints.
Solution Approach 2:
The patent implements a feedback mechanism where the third-party UE monitors the types and frequencies of collisions in the network, and adjusts the priority assignments for different message types accordingly. This feedback loop ensures that the prioritization scheme adapts to actual network conditions, maintaining effective collision detection while managing transmission capacity efficiently.
3Measurement precision
If the third-party UE transmits all types of conflict indications, then the coordination accuracy between UEs is improved, but the complexity of message processing increases
Solution Approach 1:
The patent extracts and transmits only the most essential conflict indication information rather than all possible details. By taking out only the critical elements needed for UE coordination (such as the presence and basic details of collisions), the system maintains coordination accuracy while significantly reducing message processing complexity at the receiving end.
Solution Approach 2:
The patent applies partial action by selectively including only certain types of conflict indications in the transmission, rather than providing complete and exhaustive information about all collisions. This partial information approach is sufficient for effective UE coordination while keeping the message format and processing complexity manageable.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. An example method for wireless communication at a first user equipment (UE) may include receiving at least a first sidelink transmission from a second UE, wherein at least a second sidelink transmission from a third UE is scheduled contemporaneously with at least the first sidelink transmission from the second UE. The method may also include transmitting an indication in a transmission occasion to at least one of the second UE or the third UE based at least in part on a prioritization of information for the transmission occasion, wherein the indication indicates that at least the first sidelink transmission from the second UE is scheduled contemporaneously with at least the second sidelink transmission from at least the third UE.