Wireless Resource Selection via Inter-User Coordination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing NR SL Rel-16 system faces limitations in supporting full service requirements for 5G V2X due to time constraints, leading to issues like resource collisions and interference from half-duplex and hidden node problems, which are not effectively addressed by current inter-user resource coordination methods.
Innovation Solution
A method for resource selection in wireless communication systems that introduces inter-user coordination to establish associations between coordinated resources and target time-frequency resource blocks, allowing for autonomous resource selection while minimizing collisions and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If distributed resource selection is used in NR SL, then system autonomy and scalability are improved, but resource collisions and interference from half-duplex and hidden node problems worsen
Solution Approach 1:
The patent implements feedback mechanisms where UEs exchange resource selection information and collision status through control channels. Receiving UEs provide feedback about detected transmissions, enabling transmitting UEs to adjust their resource selections dynamically, thereby reducing collisions while maintaining autonomous operation.
Solution Approach 2:
The patent introduces coordination UEs that act as intermediaries to facilitate resource selection among multiple UEs. These coordination UEs collect resource status information from multiple sources, process collision risks, and provide recommended resource allocations, mediating between autonomous selection and centralized control.
2Reliability
If inter-UE coordination is introduced to reduce resource collisions, then resource selection reliability is improved, but system complexity increases
Solution Approach 1:
The patent segments the coordination function into separate modules: resource status monitoring, collision detection, coordination message generation, and resource selection. This modular segmentation allows each component to be optimized independently and simplifies the overall system architecture while maintaining reliable coordination.
Solution Approach 2:
The patent implements partial coordination where only UEs experiencing collisions or resource constraints engage in coordination procedures, while other UEs continue with autonomous selection. This selective application of coordination reduces overall system complexity while maintaining reliability where needed.
3Adaptability or versatility
If autonomous resource selection is implemented, then degree of freedom in resource selection is improved, but hidden node problems and interference worsen
Solution Approach 1:
The patent implements preliminary resource reservation where UEs announce their intended resource selections in advance through control information before actual data transmission. This preliminary action allows other UEs to detect and avoid selecting the same resources, preventing hidden node collisions while preserving autonomous selection flexibility.
Solution Approach 2:
The patent establishes feedback loops where receiving UEs monitor and report detected transmissions to potential transmitting UEs. This feedback enables transmitting UEs to identify hidden node conditions and adjust their resource selections accordingly, reducing interference while maintaining adaptability.
Data Source
AI summary
A first node receives a first signaling; performs a first channel sensing in a first resource pool; and determines a target resource pool; and selects a target time-frequency resource block in the target resource pool; and transmits a second signaling on the target time-frequency resource block; the first signaling indicates a first reference resource set, the first reference resource set comprising at least one time-frequency resource block; the first channel sensing is used to determine the target resource pool; a first candidate time-frequency resource block is a time-frequency resource block in the target resource pool; whether the first candidate time-frequency resource block belongs to the first reference resource set is used to determine whether the first candidate time-frequency resource block is chosen as the target time-frequency resource block. This application makes full use of inter-user coordinated resources so that the freedom degree of resource selection can be guaranteed.