Sidelink Resource Allocation via Destination ID Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficiently scheduling sidelink transmissions to avoid collisions and optimize resource allocation, especially in scenarios where multiple sidelink transmissions occur in the same slot and subchannel, leading to interference and reduced communication efficiency.
Innovation Solution
A configuration that allows the network to schedule multiple sidelink transmissions based on destination IDs or sidelink collision reports, enabling the allocation of resources to minimize interference by determining the optimal transmission slots and subchannels for UEs, thereby enhancing the opportunity for parallel scheduling of beamformed sidelink communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple sidelink transmissions are scheduled in the same slot and subchannel, then resource utilization is improved, but collisions and interference increase
Solution Approach 1:
The patent segments the resource allocation by introducing destination ID-based scheduling, where resources are divided into different allocation sets based on destination identifiers. This allows multiple transmissions to be scheduled in the same slot and subchannel while preventing collisions by assigning different destination IDs to different transmission pairs, thus resolving the contradiction between resource utilization and collision avoidance.
Solution Approach 2:
The patent applies local quality by making the scheduling decision dependent on the specific destination ID. Different destination IDs receive different resource allocation treatments, allowing optimized scheduling for each transmission pair. This enables parallel transmissions to coexist without interference by tailoring resource allocation to the specific local requirements of each transmission pair.
2Productivity
If beamformed sidelink communications are used, then transmission efficiency is improved, but scheduling complexity increases
Solution Approach 1:
The patent makes the scheduling mechanism universal by using destination ID as a common scheduling parameter that works for all beamformed transmissions. Instead of requiring separate scheduling logic for each beam pair, the system uses a unified destination ID-based approach that automatically handles beamformed transmissions, reducing scheduling complexity while maintaining transmission efficiency.
Solution Approach 2:
The patent implements feedback mechanisms where receiving UEs report collision information back to the network entity. This feedback loop enables the network to adjust scheduling decisions dynamically, simplifying the overall scheduling process by using real-time collision reports to optimize resource allocation for beamformed transmissions without requiring complex predictive scheduling algorithms.
Data Source
AI summary
A UE receives, from a network entity, an allocation of resources for a sidelink transmission, the allocation of resources including an indication of a destination identifier (ID). The UE transmits the sidelink transmission to a second UE based on the allocation of resources for the sidelink transmission and the destination ID associated with the second UE. A UE receives, from a first UE, a request to form a connection for sidelink communication. The UE measures at least one colliding sidelink transmission from at least one additional UE interfering with a sidelink transmission from the first UE and transmits, to a network entity, a sidelink collision report indicating the measured at least one colliding sidelink transmission from the at least one additional UE. The UE communicates, with the first UE, via the sidelink communication based on an allocation of resources for the sidelink transmission after the sidelink collision report.