Rotating Sidelink Scheduler for Wireless Resource Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face delays and inaccuracies in sidelink scheduling due to centralized resource allocation, which can lead to increased power consumption and interference in sidelink communications.
Innovation Solution
Implementing a rotating sidelink scheduler among a group of wireless network devices, where UEs transmit indications of their scheduling status and request resources, allowing for decentralized resource allocation based on channel sensing and priority, reducing the need for continuous channel sensing and minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If centralized resource allocation is used for sidelink scheduling, then resource allocation can be coordinated, but scheduling delays increase and power consumption rises
Solution Approach 1:
The patent segments the centralized scheduling function by introducing a rotating scheduler mechanism where different UEs take turns performing scheduling operations. This divides the scheduling burden over time, allowing faster local decisions while maintaining coordination through rotation, thereby reducing scheduling delays without sacrificing allocation accuracy.
Solution Approach 2:
The patent implements dynamic scheduling by allowing the scheduler role to rotate among different UEs based on predefined criteria. This dynamic approach enables the system to adapt scheduling decisions to current channel conditions and UE states, improving both speed and accuracy of resource allocation while reducing overall power consumption through more efficient scheduling.
2Reliability
If centralized resource allocation is used for sidelink scheduling, then coordination is maintained, but power consumption increases
Solution Approach 1:
The patent segments the power consumption burden by distributing scheduling operations across multiple UEs through rotation. Instead of one UE continuously performing resource allocation tasks, the workload is divided and rotated, reducing the energy consumption of individual UEs while maintaining system-wide coordination through the rotation mechanism.
Solution Approach 2:
The patent enables UEs to perform self-scheduling operations during their turn as scheduler, reducing dependence on continuous centralized control. This self-service approach allows UEs to autonomously manage their own scheduling needs during their allocated time slot, thereby reducing overall system power consumption while maintaining coordination through the rotation protocol.
3Reliability
If centralized resource allocation is used for sidelink scheduling, then coordination is maintained, but interference increases
Solution Approach 1:
The patent uses dynamic rotation to assign scheduling roles, allowing the system to adapt scheduling decisions to current interference conditions. By rotating the scheduler role based on real-time channel state information, the system can dynamically adjust resource allocation to minimize interference while maintaining coordination, thereby reducing harmful interference effects.
Solution Approach 2:
The patent incorporates feedback mechanisms where UEs report channel state information and scheduling status to the rotating scheduler. This feedback loop enables the scheduler to make informed decisions about resource allocation that consider current interference conditions, allowing coordinated scheduling that minimizes interference while maintaining system reliability.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to one or more other UEs in a group of wireless network devices that includes the first UE and the one or more other UEs, an indication that the UE is a current sidelink scheduler for the UEs in the group of wireless network devices. The UE may receive, from at least one other UE in the group of wireless network devices, a scheduling request for a sidelink communication to be transmitted by the at least one other UE. The UE may transmit, to the at least one other UE, a grant of resources for the sidelink communication to be transmitted by the at least one other UE. Numerous other aspects are described.