Sidelink Resource Preemption Using UE Priority Indications
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing resource preemption for sidelink transmissions, leading to potential interference and suboptimal utilization of communication resources.
Innovation Solution
Implementing mechanisms for user equipment (UE) and network entities to determine conditions for sidelink transmission preemption, transmit preemption indications, and adjust resource allocation to preempt scheduled sidelink transmissions, allowing for more efficient use of resources for other communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scheduled sidelink transmissions are maintained without preemption, then communication reliability is improved, but resource utilization efficiency deteriorates when higher priority communications need to use the resources
Solution Approach 1:
The patent implements dynamic preemption mechanisms where scheduled sidelink transmissions can be preempted by higher priority communications. The system transitions from static resource allocation to dynamic reallocation, allowing the network to adapt resource usage based on changing priority requirements and communication needs, thereby resolving the contradiction between maintaining reliability and improving utilization efficiency
Solution Approach 2:
The patent changes the parameter of transmission priority by introducing preemption indications that allow higher priority communications to override scheduled transmissions. This parameter change enables the system to reallocate resources based on current priority requirements, improving overall resource utilization while maintaining reliability for critical communications
2Productivity
If preemption mechanisms are implemented for sidelink transmissions, then resource utilization efficiency is improved, but system complexity increases due to additional preemption indication handling
Solution Approach 1:
The patent introduces preemption indications as intermediary signals between the network and sidelink transmissions. These indications act as mediators that carry preemption information without requiring complex direct interactions, simplifying the overall system architecture while enabling efficient resource reallocation. The preemption indications serve as a standardized interface that reduces handling complexity
3Productivity
If preemption is applied to sidelink resources, then communication efficiency for high priority transmissions is improved, but interference with existing scheduled transmissions increases
Solution Approach 1:
The patent implements feedback mechanisms where preemption indications are transmitted to inform affected sidelink transmissions about the preemption event. This feedback allows the system to manage interference by notifying relevant parties of resource reallocation, enabling them to adjust their transmission schedules and reduce interference impacts while maintaining high communication efficiency for priority transmissions
Data Source
AI summary
In some aspects, a user equipment (UE) may determine that one or more conditions are satisfied for preemption of a scheduled sidelink transmission. The UE may transmit a sidelink preemption indication that indicates that a set of resources associated with the scheduled sidelink transmission are to be preempted. The UE may use the set of resources for transmission or reception of another communication. Numerous other aspects are described.